White says it's a critical period in which hunter-gatherers gave way to farmers.

怀特表示，那是狩猎-采集者让位给农民的关键时期。

We know this is the critical period for sound development, but what's going on up there?

我们知道这是辩声能力发展的关键时期，但是究竟发生了什么？

Now, you're probably wondering why there is a critical period in the first place.

现在，您可能想知道为什么首先要有一个关键时期。

White says it's a critical period in which hunter-gatherers gave way to farmers.

怀特说，这是一个关键时期，狩猎采集者让位于农民。

There are five critical periods in the survival of the English language.

英语的生存有五个关键时期。

It appeared that Genie had passed the critical period of learning human language, which is thought to end around puberty.

看来精灵已经过了学习人类语言的关键期，也就是认为在青春期左右结束。

Language may have a critical period, but some actions may still be possible to learn through observation no matter the age they're introduced.

语言可能有一个关键期，但有些动作无论在什么年龄段出现，仍然可以通过观察来学习。

Some scientists think that MDMA may help reopen up what's called a " critical period" in the brain, like we experience during childhood when we're learning new things.

刘易斯：一些科学家认为摇头丸可能有助于重新开启大脑中所谓的“关键期”，就像我们在童年学习新事物时所经历的那样。